I want to invite a person that I forgot, in an already existing meeting. Can I do that?
Yes that is possible.
1. Open the meeting in question.
2. In the view that opens, you can click on the "participants" link to the left of the list of currently invited people.
3. A new view will open, with the option of adding (and removing) people to the meeting.
Hope this helps!
/Jon
Thanks for the comprehensive answer Jon!
/Karolina
Thanks!! I didn't see the link to the left.

Jon Nylander
Yes that is possible.
1. Open the meeting in question.
2. In the view that opens, you can click on the "participants" link to the left of the list of currently invited people.
3. A new view will open, with the option of adding (and removing) people to the meeting.
Hope this helps!
/Jon